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>Chapter 18. Server Configuration</H1
><DIV
CLASS="TOC"
><DL
><DT
><B
>Table of Contents</B
></DT
><DT
>18.1. <A
HREF="config-setting.html"
>Setting Parameters</A
></DT
><DT
>18.2. <A
HREF="runtime-config-file-locations.html"
>File Locations</A
></DT
><DT
>18.3. <A
HREF="runtime-config-connection.html"
>Connections and Authentication</A
></DT
><DD
><DL
><DT
>18.3.1. <A
HREF="runtime-config-connection.html#RUNTIME-CONFIG-CONNECTION-SETTINGS"
>Connection Settings</A
></DT
><DT
>18.3.2. <A
HREF="runtime-config-connection.html#RUNTIME-CONFIG-CONNECTION-SECURITY"
>Security and Authentication</A
></DT
></DL
></DD
><DT
>18.4. <A
HREF="runtime-config-resource.html"
>Resource Consumption</A
></DT
><DD
><DL
><DT
>18.4.1. <A
HREF="runtime-config-resource.html#RUNTIME-CONFIG-RESOURCE-MEMORY"
>Memory</A
></DT
><DT
>18.4.2. <A
HREF="runtime-config-resource.html#RUNTIME-CONFIG-RESOURCE-KERNEL"
>Kernel Resource Usage</A
></DT
><DT
>18.4.3. <A
HREF="runtime-config-resource.html#RUNTIME-CONFIG-RESOURCE-VACUUM-COST"
>Cost-based Vacuum Delay</A
></DT
><DT
>18.4.4. <A
HREF="runtime-config-resource.html#RUNTIME-CONFIG-RESOURCE-BACKGROUND-WRITER"
>Background Writer</A
></DT
><DT
>18.4.5. <A
HREF="runtime-config-resource.html#RUNTIME-CONFIG-RESOURCE-ASYNC-BEHAVIOR"
>Asynchronous Behavior</A
></DT
></DL
></DD
><DT
>18.5. <A
HREF="runtime-config-wal.html"
>Write Ahead Log</A
></DT
><DD
><DL
><DT
>18.5.1. <A
HREF="runtime-config-wal.html#RUNTIME-CONFIG-WAL-SETTINGS"
>Settings</A
></DT
><DT
>18.5.2. <A
HREF="runtime-config-wal.html#RUNTIME-CONFIG-WAL-CHECKPOINTS"
>Checkpoints</A
></DT
><DT
>18.5.3. <A
HREF="runtime-config-wal.html#RUNTIME-CONFIG-WAL-ARCHIVING"
>Archiving</A
></DT
></DL
></DD
><DT
>18.6. <A
HREF="runtime-config-replication.html"
>Replication</A
></DT
><DD
><DL
><DT
>18.6.1. <A
HREF="runtime-config-replication.html#RUNTIME-CONFIG-REPLICATION-MASTER"
>Master Server</A
></DT
><DT
>18.6.2. <A
HREF="runtime-config-replication.html#RUNTIME-CONFIG-REPLICATION-STANDBY"
>Standby Servers</A
></DT
></DL
></DD
><DT
>18.7. <A
HREF="runtime-config-query.html"
>Query Planning</A
></DT
><DD
><DL
><DT
>18.7.1. <A
HREF="runtime-config-query.html#RUNTIME-CONFIG-QUERY-ENABLE"
>Planner Method Configuration</A
></DT
><DT
>18.7.2. <A
HREF="runtime-config-query.html#RUNTIME-CONFIG-QUERY-CONSTANTS"
>Planner Cost Constants</A
></DT
><DT
>18.7.3. <A
HREF="runtime-config-query.html#RUNTIME-CONFIG-QUERY-GEQO"
>Genetic Query Optimizer</A
></DT
><DT
>18.7.4. <A
HREF="runtime-config-query.html#RUNTIME-CONFIG-QUERY-OTHER"
>Other Planner Options</A
></DT
></DL
></DD
><DT
>18.8. <A
HREF="runtime-config-logging.html"
>Error Reporting and Logging</A
></DT
><DD
><DL
><DT
>18.8.1. <A
HREF="runtime-config-logging.html#RUNTIME-CONFIG-LOGGING-WHERE"
>Where To Log</A
></DT
><DT
>18.8.2. <A
HREF="runtime-config-logging.html#RUNTIME-CONFIG-LOGGING-WHEN"
>When To Log</A
></DT
><DT
>18.8.3. <A
HREF="runtime-config-logging.html#RUNTIME-CONFIG-LOGGING-WHAT"
>What To Log</A
></DT
><DT
>18.8.4. <A
HREF="runtime-config-logging.html#RUNTIME-CONFIG-LOGGING-CSVLOG"
>Using CSV-Format Log Output</A
></DT
></DL
></DD
><DT
>18.9. <A
HREF="runtime-config-statistics.html"
>Run-time Statistics</A
></DT
><DD
><DL
><DT
>18.9.1. <A
HREF="runtime-config-statistics.html#RUNTIME-CONFIG-STATISTICS-COLLECTOR"
>Query and Index Statistics Collector</A
></DT
><DT
>18.9.2. <A
HREF="runtime-config-statistics.html#RUNTIME-CONFIG-STATISTICS-MONITOR"
>Statistics Monitoring</A
></DT
></DL
></DD
><DT
>18.10. <A
HREF="runtime-config-autovacuum.html"
>Automatic Vacuuming</A
></DT
><DT
>18.11. <A
HREF="runtime-config-client.html"
>Client Connection Defaults</A
></DT
><DD
><DL
><DT
>18.11.1. <A
HREF="runtime-config-client.html#RUNTIME-CONFIG-CLIENT-STATEMENT"
>Statement Behavior</A
></DT
><DT
>18.11.2. <A
HREF="runtime-config-client.html#RUNTIME-CONFIG-CLIENT-FORMAT"
>Locale and Formatting</A
></DT
><DT
>18.11.3. <A
HREF="runtime-config-client.html#RUNTIME-CONFIG-CLIENT-OTHER"
>Other Defaults</A
></DT
></DL
></DD
><DT
>18.12. <A
HREF="runtime-config-locks.html"
>Lock Management</A
></DT
><DT
>18.13. <A
HREF="runtime-config-compatible.html"
>Version and Platform Compatibility</A
></DT
><DD
><DL
><DT
>18.13.1. <A
HREF="runtime-config-compatible.html#RUNTIME-CONFIG-COMPATIBLE-VERSION"
>Previous PostgreSQL Versions</A
></DT
><DT
>18.13.2. <A
HREF="runtime-config-compatible.html#RUNTIME-CONFIG-COMPATIBLE-CLIENTS"
>Platform and Client Compatibility</A
></DT
></DL
></DD
><DT
>18.14. <A
HREF="runtime-config-error-handling.html"
>Error Handling</A
></DT
><DT
>18.15. <A
HREF="runtime-config-preset.html"
>Preset Options</A
></DT
><DT
>18.16. <A
HREF="runtime-config-custom.html"
>Customized Options</A
></DT
><DT
>18.17. <A
HREF="runtime-config-developer.html"
>Developer Options</A
></DT
><DT
>18.18. <A
HREF="runtime-config-short.html"
>Short Options</A
></DT
></DL
></DIV
><P
>   There are many configuration parameters that affect the behavior of
   the database system. In the first section of this chapter, we
   describe how to set configuration parameters. The subsequent sections
   discuss each parameter in detail.
  </P
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